John m



(No Model.)

. J. DOLEN.

SAFETY LAMP FOR JMIIITI-IRS USE.

No. 257,670. Patented May 9, 1882.

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N. PETERS. Fholwmhugnphfln Waihin wn. D11

1 UNITED STATES PATENT *OF IcE.

JOHN M. notes, or WIGONISGO, PENNSYLVANIA, ASSIGNOB T HIMSELF,

WILLIAM H. THOMAS, AND JAMES JrKERWIN, on SAME PLACE.

SAFET Y-LAMP FOR MlNERS USE.

SPECIFICATION forming part of Letters Patent lilo. 257,670, dated May 9,1882.

Application filedMarchG, 1882. (No model.) l l To all whom itmay concern Be it known that I, JOHN M. DOLEN, of Wicotiisc'o, in the county of Dauphin and State of Pennsylvania, have invented certain new and useful Improvements in Safety-Lamps for Miners Use, of which the following is a full, clear, and exact description. I Reference is to he had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 represents a side elevation of a safety-lamp for miners use, constructed in accordance with the invention, and showing an 1 extinguishing-case applied thereto when not extended. Fig. 2 is a vertical section, onthe line as m in Fig. 1, of the same, showing the extinguishing-case as extended and operating to exclude or extinguish the light; and Fig. 3

2c is a transverse section thereof on the line by y in Fig. 2.

In safety-lamps for minors use it is very important-that efiectivc means, capable of easy and rapid operation, should be provided for cutting off all communication between the flame inside of the lamp and the outside air or gases whenever dangerexists from the lamp getting on fire.

One of the objects of this invention is to 0 furnish such a means; and for this purpose the invention consists in a telescopic case arranged on the exterior of the wire gauze or cage of the lamp, which case also excludes dirt and is a protection against breakage.

This invention also consists in means for preventing the bowl or oil-receptacle ot the lamp from becoming accidentally unscrewed, likewise in means for holding the burner to its place and for catching any escaping oil.

A represents the howl or oil-receptacle of the lamp. y

B is the base-piece of the main frame, into which the upper end of the bowl A is screwed.

B is the top or upper ring of said frame, 5 and-B B are the rods which connect the basepiece B with the upper ring, B, outside the wire gauze or cage of the lamp, and which form a portion of the main frame.

To prevent the bowl A from becoming acci- 5o dentally unscrewed from the base-piece B,

which it is liable to do it not locked, and in doing which there is great'danger when the lampisin usein the mine, I provide these parts with a spring catch or bolt, O, which automatically engages with its keeper when the bowl A is in the position of beingfully screwed home.

I) is a hollow screw-cap arranged to fitat'emale thread in' the upper part or neck, c, of the bowl A, and serving, by means of a pert'orated collar, d, on the burner b,and perforated 6o washer or plate (1 at the'bottom of said cap, to hold the burnerfast in the bowl, and to provide for the manipulation, as required, of the sat'ety wick trimming and raising wire 0, which may be of the usual description. This hollow cap D prevents the oil from escaping and get ting on the wire-gauze ot' the lamp and catches and holds any oil that may pass out of the bowl A otherwise than by the wick. I

The wire gauze or cage E is represented as fitted with a double raised top, E, which is also of wire-gauze, and virtually forms partot' the cage. This raised double top rests, when in its place, upon a bent wire or frame, f, interposed between it and the top ofthe lower gauze. l y

F is a shield in the upper portion of the cage E, and secured by screw to the top thereof to protect said top from being rapidly burned out.

G G G G are telescoping sections of an extinguishing-case arranged outside of the cage or gauze E E, within the bars B of the main frame, andfitted with atop, Gflwhich is mounted on or forms acovcr for the section G These several tubular sections are made of sheet 8 5 metal and have their longitudinal seamsfor joints closed by rivets, in preference to solder-' iug them, to prevent them from coming apart by the heat to which theyare exposed. The section G 'is fitted to rest by a bar, S, upon the top of the supplementary gauze top E, and the section GZwhich is fitted to slide up and down over or outside of the sect-ion G has one or more openings, 9, in its side, so that when the lower sections of the extinguishing-case are shut up within one another an d the section G is drawn outward in an upward direction, as shown in Fig.1,the lamp is exposed for illuminating purposes, and a draft is established through the openings 9. When, however, it

is required to extinguish the lamp, the same is done rapidly by extending the lower sections of the case in a downward direction and shutting down the section G as shown in Fig. 2, whereby the cage or wire-gauze ot' the lamp is wholly inelosed and the flame within it is extinguished. Said extinguisher or'extinguislr,

to one side;[ut of engagement with the case,

admit of the whole case beingremoved and the several se'ctio'ns'of it being taken apart.

H is the cover of the lamp, provided with the'us'nal rin g Orb and le, 2', for carryin g'the'lam p.

This cover is hinged on its one side to'the top piece, B, of the main frame, to provide for its being opened as usual and necessary. Said cover is fastened on its opening side by ahasp', ligand button or key 1, which, on being suitably turned, locks the 'hasp, and which, when turned into a difl'erent position, unlocks the hasp a'n'(l-'allows of the cover being opened. By

thus providing the cover with positive and rigid means for locking it the liability of said cover to be accidentally and suddenly opened, which endangers the breaking of the hinge of the cover and falling ofthelamp, as now sometimes happens, and is attendant with great danger, is avoided.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The telescoping tubular sections G G, the sectionfia -provided with openings g, the section G having bar S, and the covering-section G in combination with the cageE E and the frame-bars'B as shown and described.

2. The combination, in a lantern, of a cagebody, 1], wire-gauze E, and supporting-frame f, as shown and described.

3. The externally-threaded 'cap D and the bowl havinginternally'threadedneckc,incombination with the burner I), having perforated collard and washer-plate d,whe'reby the burner may be made fast to the bowl, the trimming and raising wire maybe readily manipulated, and the oil may be prevented from escaping on the cage or wire-gauze, as described.

' JOHN M. BOLER- Witnesses:

DANIEL ISRAEL, Rees H. EVANS. 

